| 
 
Old-Age, Survivors, and Disability Insurance Trust Funds, 
  Fiscal Years 1940-1976[In millions]
 
  | Fiscal year
 | Total receipts
 | Total expenditures
 | Assets |  
  | Net increase during year
 | Amount at end of year
 |  
 | 1940 | $592 | $28 | $564 | $1,745 |  
 | 1941 | 744 | 91 | 653 | 2,398 |  
 | 1942 | 967 | 137 | 830 | 3,227 |  
 | 1943 | 1,218 | 177 | 1,041 | 4,268 |  
 | 1944 | 1,395 | 217 | 1,178 | 5,446 |  
 | 1945 | 1,434 | 267 | 1,167 | 6,613 |  
 | 1946 | 1,386 | 358 | 1,028 | 7,641 |  
 | 1947 | 1,623 | 466 | 1,157 | 8,798 |  
 | 1948 | 1,807 | 559 | 1,248 | 10,047 |  
 | 1949 | 1,924 | 661 | 1,263 | 11,310 |  
 | 1950 | 2,367 | 784 | 1,583 | 12,893 |  
 | 1951 | 3,411 | 1,569 | 1,843 | 14,736 |  
 | 1952 | 3,932 | 2,067 | 1,864 | 16,600 |  
 | 1953 | 4,483 | 2,717 | 1,766 | 18,366 |  
 | 1954 | 5,028 | 3,353 | 1,676 | 20,043 |  
 | 1955 | 5,525 | 4,427 | 1,098 | 21,141 |  
 | 1956 | 6,929 | 5,478 | 1,452 | 22,593 |  
 | 1957 | 7,439 | 6,666 | 773 | 23,366 |  
 | 1958 | 8,766 | 8,221 | 546 | 23,912 |  
 | 1959 | 9,033 | 9,736 | -703 | 23,208 |  
 | 1960 | 11,394 | 11,606 | -212 | 22,996 |  
 | 1961 | 12,906 | 12,498 | 409 | 23,405 |  
 | 1962 | 13,085 | 14,356 | -1,272 | 22,133 |  
 | 1963 | 14,986 | 15,786 | -800 | 21,333 |  
 | 1964 | 17,253 | 16,623 | 630 | 21,963 |  
 | 1965 | 17,681 | 17,456 | 224 | 22,187 |  
 | 1966 | 20,071 | 20,700 | -629 | 21,558 |  
 | 1967 | 25,703 | 21,725 | 3,979 | 25,537 |  
 | 1968 | 26,440 | 23,859 | 2,581 | 28,118 |  
 | 1969 | 31,054 | 27,303 | 3,750 | 31,868 |  
 | 1970 | 36,127 | 30,275 | 5,852 | 37,720 |  
 | 1971 | 38,893 | 35,874 | 3,019 | 40,739 |  
 | 1972 | 43,208 | 40,158 | 3,050 | 43,789 |  
 | 1973 | 49,586 | 49,090 | 496 | 44,285 |  
 | 1974 | 57,704 | 55,869 | 1,835 | 46,120 |  
 | 1975 | 66,677 | 64,658 | 2,018 | 48,138 |  
 | 1976 | 70,682 | 73,901 | -3,219 | 44,919 |  
 | July-Sept 1976
 | 18,359 | 19,764 | -1,405 | 43,514 |  
  | Notes: Fiscal years before 1977 began July 1.
   The quarter July-September 1976 was a transition quarter to the
   current fiscal year definition. Fiscal 
   years after 1976 begin October 1. The Disability Insurance Trust Fund
   began operations in calendar year 1957 and is thus included above
   for fiscal years 1957-76; amounts before 1957 are for the 
   Old-Age and Survivors Insurance 
   Trust Fund only.
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